433
FNCA52 TJSJ 160730
FWFSJU
FIRE WEATHER PLANNING FORECAST FOR PUERTO RICO
NATIONAL WEATHER SERVICE SAN JUAN PR
330 AM AST WED SEP 16 2026
DISCUSSION
NO FIRE DANGER IS EXPECTED TODAY.
PRZ014-162000-
SOUTHEAST COASTAL PLAINS-
330 AM AST WED SEP 16 2026
TODAY TONIGHT THU
CLOUD COVER PCLDY PCLDY MCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 60 60 70
TEMP (24H TREND) 90 (+1) 75 (-2) 90
RH % (24H TREND) 59 (-3) 97 (+11) 64
WIND 20FT/EARLY(MPH) E 17 E 14 E 14
WIND 20FT/LATE(MPH) E 20 E 11 E 16
MIXING HGT(FT-AGL/MSL)5190 4260
TRANSPORT WND (MPH) E 17 E 18
VENT RATE (KT-FT) 77850 68160
DISPERSION 5 5
DSI 6 5 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ015-162000-
SOUTHERN HILLS-
330 AM AST WED SEP 16 2026
TODAY TONIGHT THU
CLOUD COVER PCLDY PCLDY MCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 70 70 60
TEMP (24H TREND) 88 (+3) 71 (-3) 87
RH % (24H TREND) 62 (-5) 100 (+9) 68
WIND 20FT/EARLY(MPH) E 13 E 12 E 13
WIND 20FT/LATE(MPH) E 14 E 11 SE 13
MIXING HGT(FT-AGL/MSL)5830 5180
TRANSPORT WND (MPH) E 16 SE 18
VENT RATE (KT-FT) 81620 82880
DISPERSION 5 5
DSI 6 4 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ016-162000-
NORTH COASTAL PLAINS-
330 AM AST WED SEP 16 2026
TODAY TONIGHT THU
CLOUD COVER MCLDY PCLDY MCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 70 60 80
TEMP (24H TREND) 89 (0) 75 (-2) 91
RH % (24H TREND) 66 (-1) 100 (+7) 66
WIND 20FT/EARLY(MPH) E 14 E 18 E 13
WIND 20FT/LATE(MPH) E 20 E 12 E 16
MIXING HGT(FT-AGL/MSL)4930 5000
TRANSPORT WND (MPH) E 17 E 17
VENT RATE (KT-FT) 73950 75000
DISPERSION 5 5
DSI 6 5 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ017-162000-
NORTHERN HILLS-
330 AM AST WED SEP 16 2026
TODAY TONIGHT THU
CLOUD COVER PCLDY PCLDY MCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 70 70 90
TEMP (24H TREND) 88 (+1) 72 (-2) 90
RH % (24H TREND) 66 (-2) 100 (+4) 66
WIND 20FT/EARLY(MPH) E 13 E 16 E 12
WIND 20FT/LATE(MPH) E 18 E 9 E 13
MIXING HGT(FT-AGL/MSL)5540 5760
TRANSPORT WND (MPH) E 16 SE 16
VENT RATE (KT-FT) 77560 80640
DISPERSION 5 5
DSI 6 4 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ018-162000-
WEST COAST-
330 AM AST WED SEP 16 2026
TODAY TONIGHT THU
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 70 60 50
TEMP (24H TREND) 91 (0) 73 (-2) 90
RH % (24H TREND) 62 (-3) 100 (+5) 69
WIND 20FT/EARLY(MPH) E 11 E 13 E 16
WIND 20FT/LATE(MPH) E 13 E 10 SE 16
MIXING HGT(FT-AGL/MSL)4880 5180
TRANSPORT WND (MPH) E 9 SE 18
VENT RATE (KT-FT) 39040 82880
DISPERSION 5 5
DSI 6 4 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ019-162000-
EASTERN INTERIOR-
330 AM AST WED SEP 16 2026
TODAY TONIGHT THU
CLOUD COVER MCLDY MCLDY MCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 70 70 80
TEMP (24H TREND) 88 (+1) 73 (-3) 89
RH % (24H TREND) 66 (0) 100 (+8) 66
WIND 20FT/EARLY(MPH) E 13 E 14 E 14
WIND 20FT/LATE(MPH) E 13 SE 14 SE 14
MIXING HGT(FT-AGL/MSL)6100 4910
TRANSPORT WND (MPH) E 15 SE 18
VENT RATE (KT-FT) 79300 78560
DISPERSION 5 5
DSI 6 5 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ022-162000-
LUQUILLO MOUNTAIN RANGE-
330 AM AST WED SEP 16 2026
TODAY TONIGHT THU
CLOUD COVER MCLDY MCLDY CLOUDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 70 70 80
TEMP (24H TREND) 84 (+3) 70 (-4) 84
RH % (24H TREND) 70 (-2) 100 (+6) 72
WIND 20FT/EARLY(MPH) E 11 E 12 SE 12
WIND 20FT/LATE(MPH) E 11 SE 12 SE 12
MIXING HGT(FT-AGL/MSL)3860 2840
TRANSPORT WND (MPH) E 16 E 18
VENT RATE (KT-FT) 54040 45440
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ023-162000-
CENTRAL MOUNTAIN RANGE-
330 AM AST WED SEP 16 2026
TODAY TONIGHT THU
CLOUD COVER PCLDY PCLDY MCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 80 80 60
TEMP (24H TREND) 86 (+4) 69 (-3) 86
RH % (24H TREND) 64 (-9) 100 (+3) 72
WIND 20FT/EARLY(MPH) E 9 E 11 E 11
WIND 20FT/LATE(MPH) E 12 E 6 SE 11
MIXING HGT(FT-AGL/MSL)7110 5710
TRANSPORT WND (MPH) E 13 SE 17
VENT RATE (KT-FT) 78210 85650
DISPERSION 5 5
DSI 6 2 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ024-162000-
CAYEY MOUNTAIN RANGE-
330 AM AST WED SEP 16 2026
TODAY TONIGHT THU
CLOUD COVER MCLDY MCLDY MCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 60 70 80
TEMP (24H TREND) 84 (+2) 70 (-4) 84
RH % (24H TREND) 70 (-1) 100 (+6) 75
WIND 20FT/EARLY(MPH) E 11 E 10 E 10
WIND 20FT/LATE(MPH) E 12 E 10 SE 11
MIXING HGT(FT-AGL/MSL)5060 3720
TRANSPORT WND (MPH) E 17 E 18
VENT RATE (KT-FT) 75900 59520
DISPERSION 5 5
DSI 6 5 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ025-162000-
VIEQUES-
330 AM AST WED SEP 16 2026
TODAY TONIGHT THU
CLOUD COVER MCLDY MCLDY MCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 60 60 70
TEMP (24H TREND) 90 (+2) 76 (-4) 89
RH % (24H TREND) 59 (-3) 97 (+16) 62
WIND 20FT/EARLY(MPH) E 16 E 18 E 17
WIND 20FT/LATE(MPH) E 16 E 18 E 17
MIXING HGT(FT-AGL/MSL)3440 3150
TRANSPORT WND (MPH) E 18 E 22
VENT RATE (KT-FT) 55040 59850
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ026-162000-
CULEBRA-
330 AM AST WED SEP 16 2026
TODAY TONIGHT THU
CLOUD COVER PCLDY MCLDY MCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 60 70 70
TEMP (24H TREND) 91 (+3) 77 (-4) 89
RH % (24H TREND) 61 (-7) 99 (+17) 67
WIND 20FT/EARLY(MPH) E 16 E 19 E 17
WIND 20FT/LATE(MPH) E 16 E 19 E 17
MIXING HGT(FT-AGL/MSL)3340 3220
TRANSPORT WND (MPH) E 20 E 22
VENT RATE (KT-FT) 56780 61180
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ027-162000-
SOUTHWEST COASTAL PLAINS AND MONA ISLAND-
330 AM AST WED SEP 16 2026
TODAY TONIGHT THU
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 50 50 60
TEMP (24H TREND) 91 (+1) 75 (-2) 90
RH % (24H TREND) 57 (-4) 96 (+9) 63
WIND 20FT/EARLY(MPH) E 17 E 16 E 19
WIND 20FT/LATE(MPH) E 19 E 14 E 19
MIXING HGT(FT-AGL/MSL)5150 4920
TRANSPORT WND (MPH) E 15 SE 22
VENT RATE (KT-FT) 66950 93480
DISPERSION 5 5
DSI 6 5 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
VIZ001-162000-
SAINT THOMAS AND SAINT JOHN-
330 AM AST WED SEP 16 2026
TODAY TONIGHT THU
CLOUD COVER PCLDY MCLDY MCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 60 70 60
TEMP (24H TREND) 90 (+4) 76 (-5) 87
RH % (24H TREND) 61 (-7) 97 (+13) 66
WIND 20FT/EARLY(MPH) E 16 E 18 E 18
WIND 20FT/LATE(MPH) E 17 E 19 E 18
MIXING HGT(FT-AGL/MSL)3240 3170
TRANSPORT WND (MPH) E 21 E 22
VENT RATE (KT-FT) 58320 60230
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
VIZ002-162000-
ST CROIX-
330 AM AST WED SEP 16 2026
TODAY TONIGHT THU
CLOUD COVER MCLDY MCLDY MCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 60 70 70
TEMP (24H TREND) 91 (+4) 77 (-4) 91
RH % (24H TREND) 63 (-6) 98 (+13) 64
WIND 20FT/EARLY(MPH) E 16 E 17 E 17
WIND 20FT/LATE(MPH) E 14 E 17 E 17
MIXING HGT(FT-AGL/MSL)3720 3530
TRANSPORT WND (MPH) E 20 E 23
VENT RATE (KT-FT) 63240 70600
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
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